All posts in reverse chronological order
last modified: October 19, 2025
Posted on 2021-11-16— 3D Printing, Projects
I’ve released a major update to my 3D-print storage box system: expanded sizes (up to 6x6 and 9x9 split), improved geometries, 3MF files, JPEG previews, and more dividers. If you use my boxes or print them yourself, read the full post for download links, compatibility notes, and printing tips.
Posted on 2021-10-29— 3D Printing, Common
I designed a set of 3D-printable round corner templates specifically for woodworking and routing. They’re optimized for 0.4mm nozzles and 0.2mm layers, include snap-in guides, screw holes, and metric/imperial sizes. If you often rout rounded edges, read the full post for printing tips and mounting options.
Posted on 2021-08-21— 3D Printing, Projects
I designed a simple three-part 3D printed enclosure for the Adafruit PowerBoost 1000C and up to a 1200mAh LiPo. In this post I share the print files, component list, and step-by-step assembly tips to convert the board into a safe portable power pack — please read on if you'd like to build one.
Posted on 2021-08-13— Common
I've put together a brief survey to guide development of the storage boxes system. Your feedback will help nudge future changes in the directions users want. Please take a few minutes to share your preferences and ideas — I’d appreciate your input and invite you to check back for updates and results.
Posted on 2021-08-13— 3D Printing, Common
I've released several new 3D-print storage boxes with the label area moved to a different side so identical boxes can sit in a drawer with labels aligned. I explain size variants, rib adjustments, and how to download updated files. Please read the full post to see illustrations and the catalog link.
Posted on 2021-07-06— Common
I walk you step by step through building a solid carbohydrate source, covering ingredients, tools, fermentation, mixing, shaping and oven heat treatment. I use SI units and practical timing tips — read the full tutorial if you’d like to follow along and try this process at home.
Posted on 2021-05-04— Puzzle
I uncovered an ancient stone with a mysterious multiplexed display — five inputs and six outputs. In this puzzle I explore what the display likely represents and invite you to find the longest continuous sequence of numbers it can show. Try the interactive panel and read the full post to solve it.
Posted on 2021-05-03— Puzzle
I present a symmetric logic-gate circuit that implements a well-known function. Try to identify the function; hints are provided if you get stuck. If you enjoy this kind of puzzle, read the full post for images, tips, and the solution - I'd love your feedback and suggestions for more puzzles.
Posted on 2021-05-01— Puzzle
I present a stylised logic-gate puzzle: a circuit that performs a handy function. Try to deduce what it does from the diagram, use the hints if you get stuck, and read the full post for the solution and explanation. I'd love your feedback or questions.
Posted on 2021-04-29— Puzzle
I created a symmetrical logic‑gate diagram and challenge you to spot its function. Study the image, try simplifying the design, and use the provided hints if needed. If you enjoy puzzles or digital logic, read the full post for extra challenges and to compare solutions.
Posted on 2021-04-25— Projects
I designed a 3D-printable bottle opener to help seniors and people with limited grip turn 26–30mm plastic caps. The tapered 72-tooth socket adapts ±1mm and the handle has finger notches — print in PETG. Download the STL files and read the full post for print settings and tweaks.
Posted on 2021-04-17— Learn, Software
I walk you through using the RP2040's PIO to measure a PC fan's RPM with a small software filter to ignore short spikes and timeouts. I explain the PIO routine and a simple RpmInput wrapper in MicroPython—read on if you'd like the code and practical setup tips.
Posted on 2021-04-10— 3D Printing, Projects
I recently updated my storage-boxes system to include split boxes so you can print larger containers or use small printer beds. I tested glued joints with PLA and PETG and added 12 new STL parts. Read the full post to see part numbers, joining tips, and where to download them.
Posted on 2021-04-05— Common
I show two practical ways to print the turntable platform: filling tiny slots with food-safe epoxy for the best light-blocking results, or adjusting infill to avoid epoxy. I include slicer tips, material settings, and GitHub downloads. Read the full post to follow step-by-step instructions and choose the right method.
Posted on 2021-04-05— 3D Printing, Projects
I tested five turntable platform revisions to reduce light inference and compared sensor readings across empty and full compartments. I explain what worked, which trade-offs matter, and why the slot design performs best. Read the full post for detailed measurements, images, and practical notes if you want to replicate this.
Posted on 2021-04-03— 3D Printing, Projects
I walk through the sensor board I designed for the pet feeder, explaining the position sensor, four fill sensors, and why component choices (like the 100kΩ resistor) matter. I keep the design simple and practical — read the full post for schematics, measurements, and ordering details.
Posted on 2021-04-02— 3D Printing, Build
I solved stray light hitting my pet-feeder's fill sensors by filling 3D-printed slots with black, low-viscosity epoxy. Using a syringe I achieved a nearly flush, cleanable surface that keeps measurements accurate. Read the full post for materials, step-by-step photos, and a short demo video if you'd like to try it.
Posted on 2021-03-31— 3D Printing, Fail, Projects
I ran into unexpected problems testing the fill-sensor panel: light was travelling through the printed turntable and confusing one sensor. I walk through how I diagnosed the issue, which fixes failed, and two practical approaches I’m testing — read on for the full troubleshooting and print updates.
Posted on 2021-03-27— 3D Printing, Projects
I updated my pet-feeder's drive with a TMC2209 SilentStepStick and a 17HS19 stepper to get near‑silent operation and run from 5V. I built a simple Pico-based controller, adjusted gearing for speed, and tested sensors. Read the full update for photos, choices and test notes.
Posted on 2021-03-22— 3D Printing, Build
I show how to adapt a MicroMaTch SMD connector to a breadboard using a striped prototyping board in under five minutes. I walk through cutting, scraping copper, and soldering a pin header so you can quickly test or swap modules—read the full post for step-by-step photos and tips.